Heterojunction solar cells with improved power conversion efficiency using graphene quantum dots

RSC Advances ◽  
2016 ◽  
Vol 6 (112) ◽  
pp. 110493-110498 ◽  
Author(s):  
Yang Dang ◽  
Xinyang Zhang ◽  
Xin Chen ◽  
Bonan Kang ◽  
S. Ravi P. Silva
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Hydrothermal Method ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Graphene Quantum Dots ◽  
Heterojunction Solar Cells

The effect of incorporating graphene quantum dots (GQDs) synthesized by a hydrothermal method in the active layer of organic solar cells was investigated.

Lead Halide Perovskite Quantum Dots To Enhance the Power Conversion Efficiency of Organic Solar Cells

2019 ◽  
Vol 131 (36) ◽  
pp. 12826-12834 ◽  
Author(s):  
Néstor Guijarro ◽  
Liang Yao ◽  
Florian Le Formal ◽  
Rebekah A. Wells ◽  
Yongpeng Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

Improved Power Conversion Efficiency of Inverted Organic Solar Cells by Incorporating Au Nanorods into Active Layer

2015 ◽  
Vol 7 (29) ◽  
pp. 15848-15854 ◽  
Author(s):  
Yeyuan He ◽  
Chunyu Liu ◽  
Jinfeng Li ◽  
Xinyuan Zhang ◽  
Zhiqi Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Au Nanorods

Bulk heterojunction organic solar cells based on carbazole–BODIPY conjugate small molecules as donors with high open circuit voltage

2015 ◽  
Vol 17 (40) ◽  
pp. 26580-26588 ◽  
Author(s):  
Thaksen Jadhav ◽  
Rajneesh Misra ◽  
S. Biswas ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Power Conversion Efficiency ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Open Circuit

The power conversion efficiency of an optimized3a:PC71BM active layer based device is 5.05%.

Lead Halide Perovskite Quantum Dots To Enhance the Power Conversion Efficiency of Organic Solar Cells

2019 ◽  
Vol 58 (36) ◽  
pp. 12696-12704 ◽  
Author(s):  
Néstor Guijarro ◽  
Liang Yao ◽  
Florian Le Formal ◽  
Rebekah A. Wells ◽  
Yongpeng Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide

Influence of additives in bulk heterojunction solar cells using magnesium tetraethynylporphyrin with triisopropylsilyl and anthryl substituents

2014 ◽  
Vol 18 (08n09) ◽  
pp. 735-740 ◽  
Author(s):  
Takafumi Nakagawa ◽  
Junichi Hatano ◽  
Yutaka Matsuo
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Acid Methyl Ester ◽  
Heterojunction Solar Cells ◽  
Donor And Acceptor

We designed and synthesized anthryl-disubstituted magnesium tetraethynylporphyrin([{5,15-bis(anthracen-9′-yl)ethynyl}-10,20-bis{(triisopropylsilyl)ethynyl}porphyrinato] magnesium(II)), and applied it as an electron donor to solution-processed bulk heterojunction small molecule organic solar cells. The compound was characterized by single crystal X-ray crystallography as well as UV-vis light absorption spectrum showing the absorption maximum and onset at 700 and 740 nm, respectively. Organic solar cells using this compound and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) as electron donor and acceptor, respectively, showed power conversion efficiency of 1.31% at the donor and acceptor ratio of 1:3. The use of pyridine as a coordinating additive increased power conversion efficiency to 1.61%, which was the best among tested additives, THF, pyradine, dioxane, and 1,8-diiodooctane.

Improved Hole Collection in Polymer Heterojunction Solar Cells with DNA/Pt-DNA Layers

2011 ◽  
Vol 1322 ◽  
Author(s):  
Ali Bilge Guvenc ◽  
Shirui Guo ◽  
Cengiz S. Ozkan ◽  
Mihrimah Ozkan
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Surface Plasmons ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Collection Efficiency ◽  
Power Conversion ◽  
Heterojunction Solar Cells ◽  
Dna Strands ◽  
Absorbance Spectra

ABSTRACTIn this study, we investigated the effects of DNA/Pt-DNA strands as hole collecting layers in polymer heterojunction solar cells based on ITO/PEDOT:PSS/P3HT:PCBM/LiF/Al structure. We demonstrated that by introducing DNA or Pt-DNA layers between the polymer electrode (PEDOT:PSS) and the active layer (P3HT:PCBM), lead to an improvement in the hole collection efficiency and power conversion efficiency and the absorbance spectra of the devices indicate that Pt particles work as surface plasmons and increase the absorbance of the devices.

The Effect of Donor Molecular Structure on Power Conversion Efficiency of Small-Molecule-Based Organic Solar Cells

2019 ◽  
Vol 16 (3) ◽  
pp. 236-243 ◽  
Author(s):  
Hui Zhang ◽  
Yibing Ma ◽  
Youyi Sun ◽  
Jialei Liu ◽  
Yaqing Liu ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Molecular Design ◽  
Power Conversion ◽  
The Relationship

In this review, small-molecule donors for application in organic solar cells reported in the last three years are highlighted. Especially, the effect of donor molecular structure on power conversion efficiency of organic solar cells is reported in detail. Furthermore, the mechanism is proposed and discussed for explaining the relationship between structure and power conversion efficiency. These results and discussions draw some rules for rational donor molecular design, which is very important for further improving the power conversion efficiency of organic solar cells based on the small-molecule donor.

scholarly journals High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhenrong Jia ◽  
Shucheng Qin ◽  
Lei Meng ◽  
Qing Ma ◽  
Indunil Angunawela ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Performance ◽  
Short Circuit ◽  
Power Conversion ◽  
High Power Conversion Efficiency ◽  
Device Structure ◽  
Narrow Bandgap

AbstractTandem organic solar cells are based on the device structure monolithically connecting two solar cells to broaden overall absorption spectrum and utilize the photon energy more efficiently. Herein, we demonstrate a simple strategy of inserting a double bond between the central core and end groups of the small molecule acceptor Y6 to extend its conjugation length and absorption range. As a result, a new narrow bandgap acceptor BTPV-4F was synthesized with an optical bandgap of 1.21 eV. The single-junction devices based on BTPV-4F as acceptor achieved a power conversion efficiency of over 13.4% with a high short-circuit current density of 28.9 mA cm−2. With adopting BTPV-4F as the rear cell acceptor material, the resulting tandem devices reached a high power conversion efficiency of over 16.4% with good photostability. The results indicate that BTPV-4F is an efficient infrared-absorbing narrow bandgap acceptor and has great potential to be applied into tandem organic solar cells.

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